Help Please

Hi there, this is my first post on the forum, how is everyone? I am looking for a little bit of help. we got a new lawn put down about June time last year and as the result of a very harsh winter it appears to have destroyed it. Could someone offer advice on the photograph i have attached as to what would be the best solution for getting the yellow / dead patches of grass back to green again? Any info would be greatly appreciated as i am still pretty much a novice in the garden when it comes to things like this.
thanks in advance,
james.
Attached Thumbnails

 

What type of soil are you on and how was it prepared for the lawn? Was it seeded or turfed? Do you have a dog?

Mainly though can you reattach the photos!?

 

hi there, i have re-attached the photo.
the lawn was turfed about this time last year and it was perfect until the winter, i dont know if all the snow has had an effect on it. We previously had paving slabs over the now grassed area, i wasn't there when the guys laid it so i don't know what's underneath it i.e. whether it's still the sand that was underneath it when the slabs were removed, there is earth underneath that though. no, we don't have a dog. sorry if the details are a bit vague but i really am a novice at this. any help / info is greatly appreciated.